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- Free
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- Works on any device
Create a QR code for a link, Wi-Fi, WhatsApp, contact and more, or read one from a photo.
- Free
- No sign-up
- Works on any device
Fill in the details to see your QR code.
PNG for phones, chats and websites. SVG and PDF stay sharp at any size, which is best for printing. Tip: point your phone camera at the preview to test it.
3. Style (optional): colors, dots, logo
Choose a photo or screenshot or drag it here
Works with photos of printed codes, screenshots and image files.
Looking for QR codes…
CSR (certificate signing request) decoder
Read a CSR or certificate: subject, key size, signature, SANs and validity, with warnings.
- Free
- No sign-up
- Works on any device
About CSR (certificate signing request) decoder
Paste a certificate signing request or certificate and read its subject, key type and size, signature algorithm, subject alternative names and validity dates. Checking a CSR before sending it to a certificate authority catches typos in the common name and weak 1024-bit keys early.
How to use CSR (certificate signing request) decoder
- Type or paste your text in the box above.
- The result appears instantly as you type.
- Copy the result or download it as a file.
Why use this tool?
- Private: everything happens in your browser. Nothing you enter is uploaded.
- Free, with no sign-up, no watermark and no limit on how often you use it.
- Works on phones, tablets and computers: Android, iPhone, Windows, Mac and Linux. Nothing to install.
- Available in 10 languages.
Also known as
Frequently asked questions
Is it safe to paste a CSR into a decoder?
A CSR holds only public information and never the private key. Still, never paste a private key anywhere, and decoding happens here in your browser.
Is CSR (certificate signing request) decoder free?
Yes. CSR (certificate signing request) decoder on Toolipedia is free to use, with no sign-up and no watermark.
Is it safe to use?
Yes. Everything is worked out in your browser, and nothing you enter is sent to our server.
Does it work on my phone?
Yes. It works in any modern browser on Android and iPhone, as well as on tablets and computers. There's nothing to install.
Do I need an account?
No. Just open the page and use the tool. There's no sign-up and no email needed.